| No. | Originator/Registrant | Cultivars | State/Country |
|
1
| Aukema, Bate | 15 | Netherlands |
|
2
| Berbee, Leo | 1 | Netherlands |
|
3
| Dautzenberg, Marie-José | 2 | Netherlands |
|
4
| Dautzenberg, Theo | 2 | Netherlands |
|
5
| de Rooij, Piet | 20 | Netherlands |
|
6
| Fransen, Joyce | 63 | Netherlands |
|
7
| Fransen, Marco | 124 | Netherlands |
|
8
| Heemskerk, Gerardus | 46 | Netherlands |
|
9
| Hensen, Karel | 11 | Netherlands |
|
10
| Henzen, Kees | 1 | Netherlands |
|
11
| Hermens, Pieter | 2 | Netherlands |
|
12
| Klinkhamer, Luc | 4 | Netherlands |
|
13
| Knoppert, Rene | 1 | Netherlands |
|
14
| Leydens, Theo | 3 | Netherlands |
|
15
| Linneman, Jeroen | 223 | Netherlands |
|
16
| Molter Nurseries | 1 | Netherlands |
|
17
| Oudolf, Piet | 4 | Netherlands |
|
18
| Reinermann, W. | 2 | Netherlands |
|
19
| Spruyt, Jan | 1 | Netherlands |
|
20
| Van Bourgondien Nursery | 1 | Netherlands |
|
21
| Van den Top, Jan | 116 | Netherlands |
|
22
| Van Eijk-Bos, Gert | 5 | Netherlands |
|
23
| Van Elderen, Ranier | 1 | Netherlands |
|
24
| Van Erven, Dirk | 5 | Netherlands |
|
25
| Van Rossum, Jannes | 1 | Netherlands |
|
26
| Van Vliet, Arie | 2 | Netherlands |
|
27
| Van Zyverden, Inc. | 1 | Netherlands |
|
28
| Verboom | 1 | Netherlands |
|
29
| Visser, Cees | 4 | Netherlands |
|
30
| Vitro Westland Nursery | 1 | Netherlands |
|
31
| Warmerdam, Piet | 10 | Netherlands |
|
32
| Witteman | 1 | Netherlands |
|
33
| Zonneveld, Ben | 7 | Netherlands |
|